Reversible Depolymerization of Silver Pyrimidinolate into Cyclic Hexamers

Abstract

The thermally induced solid state transformation of the [Ag(pymo)]n·2nH2O 1D polymer, 1, shows separate dehydration (with amorphization, 2) and devitrification processes resulting in the cyclic [Ag(pymo)]6 oligomer, 3, which has been characterized by ab-initio XRPD analysis. This transformation is reversible, 3 → 1 being a rare case of ring-opening polymerization of a coordination compound.